Allowing the Students to Re-take the Lesson

This setting determines whether the students can take the lesson more than once
or only once. The teacher may decide that the lesson contains material which
the students ought to know thoroughly. In which case repeated viewing of the
lesson should be allowed. If, however, the material is used more like an exam
then the students should not be allowed to re-take the lesson.

When the students are allowed to re-take the lesson, the grades shown
in the Grades page are either their average grade over the re-takes
or their best grade for the lesson. The next parameter determines
which of these two grading alternatives is used.

Note that the Question Analysis always uses the answers from the
first tries of the lesson, subsequent re-takes by students are ignored.

By default this option is No, meaning that students are not allowed to
re-take the lesson. It is expected that only in exceptional circumstances
will this option be set to Yes.